Combination vise and jig



P 1950 L. M. LARSON COMBINATION VISE AND JIG 3 Sheets-Sheet 1 Filed May22, 1946 m M w w 6 L Sept. 5, 1950 L. M. LARSON COMBINATION VISE AND JIG3 Sheets-Sheet 2 Filed May 22, 1946 f g. 45. 5a

Lewis Miarson Patented Sept. 5, 1950.

UNITED STATES PATENT OFFICE COMBINATION VISE AND JIG Lewis M. Larson,Waukegan, Ill.

Application May 22, 1946, Serial No. 671,476

This invention relates to a novel construction of combination vise andjig adapted to be supported on the magnetic block of a grinding machine,and which is capable of use for holding tools being ground foraccurately positioning the tool, relatively to the grinding wheel, sothat the tool may be ground to a desired angle on the side, to arequired siderake oil of the side angle to fit a required backrake on anangular end of the tool; all of which may be accomplished through theprovision of the vise and jig which is capable of universal adjustmentfor positioning the tool holding portion thereof at any required anglewith respect to the grinding wheel.

A primary object of the invention is to provide a universally adjustablecombination vise and jig capable of being readily set for accuratelyholding a tool for engagement with a grinding wheel for grinding aplurality of edges of an end of the tool to any required specification.

Another aim of the invention is to provide a combination vise of theaforedescribed characteristics having two bases, angularly disposed withrespect to one another, and either of which is adapted to engage theupper surface of a magnetic block for supporting the device either as avise or jig, so that when the device is positioned as a jig, a tool maybe correctly held therein for cutting clearances on the angle on an endof the tool.

A further object of the invention is to provide a device which willeliminate the need for using a comparator by utilizing a plurality ofsets of graduations, forming a part of the device and by means of whicha combination vise and jig may be accurately set with the work holderportion thereof at any required angle with respect to both the verticaland horizontal.

Other objects and advantages of the invention will hereinafter becomemore fully apparent from the following description of the drawings,which illustrate a preferred embodiment thereof, and wherein:

Figure 1 is a top plan view of the combination vise and jig with thetool holder section thereof removed;

Figures 2 and 3 are vertical sectional views of the complete combinationvise and jig taken substantially along planes as indicated by the lines2-2 and 3-3, respectively, of Figure 1;

Figure 4 is a side elevational view showing the device positioned tofunction as a jig;

Figure 5 is a fragmentary end view in elevation looking toward the lefthand end of Figure 1, and

4 Claims. (Cl. 51-220) Figure 6 is a horizontal sectional view takensubstantially along a plane as indicated by the line 66 of Figure 2.

Referring more specifically to the drawings, I

v designates a combination vise and jig in its entirety and whichincludes a base section, designated generally 8 having surfaces 9 andI0, disposed at right angles to one another and on either of which thebase 8 is' adapted to rest. The base 3 is formed of any suitable metalcapable of being attracted by a magnetized block, not shown, and isadapted to rest with either of its surfaces 9 or ii] on a magnetizedsupporting block of a grinding machine, not shown. The base 8 isprovided with an arcuately shaped upper surface I l which is disposedabove the surface 9, and which, as best seen in Figure 3, is providedwith a circumferentially extending recess 12 and circumferentiallyextending recesses l3, which latter recesses are disposed at the sidesof the base section 8. The base section 8 is provided with a bore I4which opens into the recess or channel 12 and which is provided with acountersunk or enlarged outer end I5 which opens into the surface 9. Theupwardly extended portion l6 at one side of the base section 8 isrecessed as seen at I! for a purpose which will hereinafter becomeapparent.

A lower rocker, designated generally I8, is mounted on the upper arcuatesurface of the base section 8, as best seen in Figure 3. The rocker I8is provided with a downwardly opening arcuate channel l9 which isdisposed above the recess or channel I2 and which is formed by thedepending side portions 20 of the rocker H3. The side portions 20 areprovided with arcuate surfaces 2| which engage the surfaces II anddepending fianges 22 which engage the recesses I3. The dependingportions 20 are provided with opposed, inwardly opening arcuate grooves23 which slidably receive laterally projecting lugs 24 of a retainingblock 25 which is disposed in the space formed by the channels l2 and I9and which is provided with a central threaded bore 26 which is connectedto the threaded shank of a bolt 2'! which extends through the bore I 4and which has a head countersunk in the bore portion 15. The head of thebolt 21 is provided with a suitable tool receiving recess, as seen indotted lines at 28 in Figure 3, for applying and removing the bolt 21.It will be readily apparent that the bolt 21 in conjunction with theblock 25 retains the lower rocker 18 in its position on the base 8 andpermits rocking movement thereof, relatively to the base 8 in adirection toward and away from the base portion it. As seen in Figure 6,the upper surface of the lower rocker 18, designated 29, issubstantially flat to turnably support a secondary base section 30, thebottom surface of which rests thereon. The base section 30 has asubstantially cylindrical side wall 3| which is provided with a taperedlower portion 32 for exposing a part of the upper surface 29 of thebottom rocker 18. As best seen in Figure 6, a portion of the surface 29which is thus exposed, is

provided with degree markings and calibrations, designated generally 33which extend from a zero midpoint to a twenty-five degree reading oneither side thereof and the tapered portion 32, as seen in Figure 5, isprovided with an arrow head or pointer 34 to function in conjunctionwith the calibrations 33. The upper portion of the secondary basesection 30 is provided with an upwardly opening arcuate groove 35 whichopens outwardly at its ends of opposed. portions of the cylindrical wall3| and which is provided with upwardly and inwardly inclined side walls,as best seen in Figure 2. One of the side walls of the groove 35 isrecessed throughout its length,

as seen at 35 and a part of said recessed wall 35- contains a retainingblock or plate 31 which is connected to a screw 33, which is turnthreadedly engages a bore 33 which opens outwardly of the cylindricalwall 3|. As best seen in Figure 3, a bolt 40 extends through a centralbore 4| in the supplemental base 30 and into a threaded bore 42 in thelower rocker l8. The head of the bolt 40 is disposed in the arcuategroove 35. The supplemental base 30 is provided witha di ametricalchannel 43 which joins with the arcuate groove 35 and which is of thesame width as the widest portion of the groove 35. The supplemental base35 is provided with arcuate recesses 44 which extend therethrough andwhich open into the ends of the channel 43. The rocker i8 is providedwith upwardly open ing, internally threadedrecesses 45 which registerwith portions of the elongated, arcuate slots 44 fOr receiving bolts 46which extend through the slots 44 and which have heads at their" upperends disposed in the ends of the channel 43'. The slots 44, as best seenin Figure 1, are of a sufficient length to allow turning of thewbase 39approximately through an arc of twenty-five degrees in either directionfroman intermediate position,'as seen in Figure 1. The bolt heads of thebolts 40 and 46' may bepro vided with recesses for receiving a suitableturning tool.

An upper rocker 4? is provided with a depending tongue 8 which fits intothe arcuate groove 35 and which has downwardly and outwardly flared sidewalls which form a dovetail connection with the upwardly restrictedgroove 35, as"

seen in Figure 2. The plate 31 is advanced in wardly by turning thescrew 38 for engaging one of the flared side walls of the tongue 48 toslidably retain said tongue in engagement with the groove 35. It will bereadily apparent, from'a consideration of Figure'Z, that the plate 3'!may be retracted to permit the tongue 33 to be re moved perpendicularlyfrom the groove 35. The tongue 48; is provided with a downwardly opening recess is which extends from endto end thereof and whichaccommodates the heads of the bolts 40 and 45; As best seen in Figure 2,the upper rocker 4! is disposedsub'stantially at a right angle to thelower roc'ke'r l8 and may be turned through an arc of substantiallytwenty-- five degrees ineitherdirec'tion from this position by means ofthe slots 44, as previously described.

The rocker 41 is provided with a substantially flat upper surface 55having a circular recess 5| in the center thereof to receive a circulardepending projection 52 which is swivelly mounted therein and whichdepends from the underside of a tool holder 53, the bottom surface ofwhich rests on and turnably engages the surface 50. The rocker 41 isprovided with a central threaded bore 54 to receive the threaded shankof a bolt 55 which extends through and is turnable in a bore 56 of theprojection 52. The bore 56 is provided with an enlarged upper end inwhich the recessed head of the bolt 55 is countersunk and which opensinto the tool receiving top surface 51 of the tool holder 53. The toolholder 53 is provided with a downwardly converging annular side wall 58for exposing two diametrically opposed indicia bearing portions 59 whichare inscribed on the upper surface 58 of the upper rocker 41 and each ofwhich includes graduation markings extending from a zero midpointfortyfive degrees in either direction and which cooperate with pointers,not shown, inscribed on the wall 58.

The upper surface 5'! of the tool holder 53 is provided with twoupstanding elongated flanges GE) and SI which are laterally spaced toone another. The flange is provided with a plurality of transverselydisposed threaded bores 52 for selectively receiving clamping screws 53which cooperate with the inner face 54 of the flange 5| for clamping atool, to be ground, not shown, on the surface 51.

In addition to the degree graduations 33 and 59, previously described,both sides of the upper rocker 41 are provided with similar degreemarkings 65 along the arcuate lower edge thereof and which extend from azero midpoint to forty-five degrees in each direction and whichcooperate with a suitable pointer, not shown, on opposite sides of thesupplemental base 30.

From the foregoing it will be readily apparent that'when the combinationdevice '2 is positioned on its base 9, itmay be employed as a vise forholding a tool, not shown, engaged between the screw 53 and the flangeface 54. The tool end to be ground by a grinder, disposed above the visei, not shown, may be positioned at any angle desired by tilting thelower and upper rockers l8 and il' and by swivelling the upper rocker4'! and base 35 relatively to the rocker I3 and by swivelling the toolholder 53, relatively to the rocker 41. The lower rocker I8 is alsoprovided with degree graduations 66, corresponding to the graduations55, for indicating the extent of tilting of the rocker it relatively tothe base 8 for swinging an end of th tool toward. oraway from thegrinding wheel. The base 35 may be turned to any desired angle withrespect to the rocker Iii, as indicatedby the graduations 33 forpositioning an end of the tool at any required angle to the grindingwheel and the rocker ll may be angularlyadjusted with respect to theSupplemental base 30 to any angle, as indicated by the graduations 55-for canting the tool with respect to the grinding wheel. Further angularadjustment of thetool can be obtained by turning the tool holder 53swivelly on the upper rocker All It will thus be readily apparent that auniversal'adjus'tment of the point of the tool to be ground maybeobtained, while the tool is held'in the vise l' and with respect to agrinding wheel.

Similarly, by positioning the vise l on its base l0, said device willfunction as a jig and with the tool disposed in substantially aperpendicular position with respect to the magnetic supporting block,not shown, which is located beneath the grinding wheel. All of theadjustments, previously described, may be employed with the device inits position of Figure 4, for adjusting the end of the tool into anyposition with respect to the grinding wheel to grind an end of the toolto an angl of any desired degree on the side of the tool and with asiderake of any required degree and with an end angle as required havinga .backrake of any required angular degree.

Various modifications and changes are contemplated and may obviously beresorted to without departing from the spirit and scope of the inventionas hereinafter defined by the appended claims.

I claim:

1. In a combination vise and jig, a base having two supporting surfacesdisposed at right angles to on another and each adapted to rest on asuitable supporting surface for supporting the device, a pair ofrockers, one of the rockers, constituting a lower rocker, being mountedon the base for angular adjustment relatively thereto, a supplementalbase interposed between said rockers and swivelly supported by the lowerrocker for turnably positioning the upper rocker rela tively to thelower rocker, and a tool engaging head supported by said upper rocker.

2. A device as in claim 1, said supplemental base being provided with adovetailed groove, said upper rocker being provided with a dependingdovetail tongue for engaging said groove, and a retractable retainingmember carried by the supplemental base for engaging and detachablyretaining said tongue in engagement with the groove.

3. A tool holder comprising a base, a tool holder section disposed abovethe base, a sub-base interposed between the tool holder section andbase, a bottom rocker interposed between the base and sub-base pivotallysupported on and connected to the base for angular adjustment relativelythereto and on which said sub-base is swivelly mounted and to which thesub-base is connected, and a top rocker interposed between the sub-baseand tool holder section pivotally mounted on and connected to thesub-base for angular adjustment relatively thereto and on which the toolholder section is mounted and swivelly connected, said top rocker andbottom rocker combining with the sub-base to mount the tool holdersection for universal adjustment relatively to the base, said base beingprovided with two supporting surfaces disposed at right angles to oneanother and adapted to alternately engage a supporting member forpositioning the tool holder to function either as a vise or as a jig.

4. A tool holder comprising a base, a bottom rocker pivotally mounted onth base and angularly adjustable relatively thereto, a supplemental baseswivelly connected to and supported on the bottom rocker, a top rockerpivotally mounted on the supplemental base and angularly adjustablethereon relatively thereto, and a tool engaging head swivelly connectedto and supported on the top rocker, said rockers pivoting about axesdisposed in parallel planes and said supplemental base and tool engaginghead rotating about axes dis-posed at right angles to the planes of thepivotal axes of the bottom rocker and top rocker, respectively, formounting the tool engaging head for universal movement relatively to thebase.

LEWIS M. LARSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,092,867 Sellew Apr. 14, 19141,434,131 Lutz Oct. 31, 1922 1,917,504 Curtis July 11, 1933 2,381,034Bura Aug. 7, 1945 2,394,202 Pollard Feb. 5, 1946 2,410,494 Gideon Nov.5, 1946

